Checked C is an extension to C that adds checking to detect or prevent common programming errors such as buffer overruns and out-of-bounds memory accesses. This repo has a wiki for Checked C, sample code, the specification, and test code.
Clone or download
dtarditi Update README.md
Fix typo.
Latest commit 3a00b2b Oct 17, 2018

README.md

Checked C

Checked C adds static and dynamic checking to C to detect or prevent common programming errors such as buffer overruns and out-of-bounds memory accesses. The goal of the project is to improve systems programming by making fundamental improvements to C. This repo contains sample code, the extension specification, and test code.

  • For a quick overview of Checked C and more information, see our Wiki.
  • The PDF of the specification is available here.
  • Compilers are available here.

Papers

We presented a research paper on Checked C at the IEEE 2018 Cybersecurity Development Conference: "Checked C: Making C Safe by Extension". The paper describes the key ideas of Checked C in 8 pages.

Note that we have added features to Checked C for improving type safety (and reducing type confusion) since writing the paper. The Wiki and specification provide up-to-date descriptions of Checked C.

Build Status

Configuration Testing Status
Debug X86 Windows Checked C and clang regression tests Debug X86 Windows status
Debug X64 Windows Checked C and clang regression tests Debug X64 Windows status
Debug X64 Linux Checked C and clang regression tests Debug X64 Linux status
Release X64 Linux Checked C, clang, and LLVM nightly tests Release X64 Linux status

Participating

We're happy to have the help! You can contribute by trying out Checked C, reporting bugs, and giving us feedback. There are other ways to contribute too. You can join the mailing lists for announcements about the project.

Licensing

The software in this repository is covered by the MIT license. See the file LICENSE.TXT for the license. The Checked C specification is made available by Microsoft under the OpenWeb Foundation Final Specification Agreement, version 1.0. Contributions of code to the Checked LLVM/clang repos are subject to the CLANG/LLVM licensing terms.

Code of conduct

This project has adopted the Microsoft Open Source Code of Conduct. For more information see the Code of Conduct FAQ or contact opencode@microsoft.com with any additional questions or comments.